How to Trigger Event When Diagram is Read-Only Mode in React Diagram?

In Syncfusion® React Diagram, you can make the diagram read-only while still triggering events like click by disabling the select constraints on nodes and connectors, along with the zoom constraint on the diagram. This effectively prevents interactions such as selection and zooming. The getNodeDefaults method uses NodeConstraints to disable the selection functionality on nodes, while the getConnectorDefaults method uses ConnectorConstraints to disable the selection functionality on connectors. Additionally, the DiagramConstraints disable the zoom functionality in diagram.

The following code snippet demonstrates how to configure these settings and trigger the click event.

<DiagramComponent
           id="diagram"
           ref={(diagram) => (diagramInstance = diagram)}
           width={'100%'}
           height={'645px'}
           nodes={sdlc}
           connectors={connections}
           //Define the click event
           click={() => {
             alert('Click Event is triggered');
           }}
           //Disable the Select constraint for nodes
           getNodeDefaults={(obj) => {
             //Sets the default values of a node
             obj.width = 100;
             obj.height = 100;
             obj.constraints =
               NodeConstraints.Default & ~NodeConstraints.Select;
             return obj;
           }}
           //Disable the Select constraint for connectors
           getConnectorDefaults={(obj) => {
            
             obj.constraints =
               ConnectorConstraints.Default & ~ConnectorConstraints.Select;
             return { style: { strokeColor: '#024249', strokeWidth: 2 } };
           }}
           //Disable the Zoom constraint for diagram
           constraints={DiagramConstraints.Default & ~DiagramConstraints.Zoom}
         >
</DiagramComponent> 

Sample : Click here for sample

Conclusion

I hope you enjoyed about how to trigger click event when diagram is in read-only mode in React Diagram

You can refer to our React Diagram feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our React Diagram example to understand how to create and manipulate data.

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